body {
    background-color: white;
}

.offcn_lits {
    font: 14px/28px 'microsoft yahei';
    color: #333;
    width: 1200px;
    margin: 10px auto;
}

.offcn_lits a {
    color: #999;
    font: 14px/28px 'microsoft yahei';
}

.xk_fl {
    margin: 20px auto 5px;
}

.xk_fl dl {
    margin-bottom: 15px;
}

.xk_fl dt {
    float: left;
    font: 14px/2 "微软雅黑";
    color: rgb(164, 164, 164);
    width: 90px;
}

.xk_fl dd {
    float: left;
    width: 1110px;
}

.xk_fl dd a {
    font: 14px/2 "微软雅黑";
    display: inline-block;
    padding: 0px 15px;
    color: #666;
}

.xk_fl dd .active {
    background: #ff4a00;
    color: #fff;
}


/* ------------排序------------------////////////////////////// */

.xk_nav {
    width: 1198px;
    border-bottom: 1px solid #e6e6e6;
    height: 42px;
    border: 1px solid #efefef;
    background: #f8f8f8;
    line-height: 42px;
    ;
}


/* 给每一个列表设置浮动，定宽 */

.xk_nav span,
.xk_nav .jgqj {
    width: 100px;
    display: block;
    float: left;
    cursor: pointer;
    font: 16px/42px "微软雅黑";
    color: #555;
    height: 42px;
    text-align: center;
    border-right: 1px solid #efefef;
    position: relative;
}

.xk_nav .jgqj a {
    color: #666;
}


/* 销量、新品 */

.xk_nav .xk_xp {
    background: url(../img/xkp_08.png) no-repeat 70px 15px;
}


/* 选择后的销量、新品 */

.xk_nav .xk_xp.active {
    background: url(../img/xkp_06.jpg) no-repeat 70px 15px #fff;
    color: #ff4a00;
}


/* 价格降序 */

.xk_nav .active.xk_jg1 {
    background: url(../img/xkp_032.jpg) no-repeat 70px 15px #fff;
    color: #ff4a00;
}


/* 价格升序 */

.xk_nav .active.xk_jg2 {
    background: url(../img/xkp_031.jpg) no-repeat 70px 15px #fff;
    color: #ff4a00;
}


/* 价格区间 */

.xk_nav .jgqj.active {
    background: #fff;
    color: #ff4a00;
}

.xk_nav .jgqj:hover a {
    width: 100px;
    display: block;
    height: 48px;
    background: #fff;
    position: absolute;
    z-index: 333;
}

.xk_nav .jgqj:hover .qj {
    display: block;
}

.xk_nav .qj {
    width: 200px;
    height: 200px;
    border: 1px solid #efefef;
    background: #fff;
    position: absolute;
    z-index: 222;
    top: 42px;
    display: none;
}

.xk_nav span.active {
    background: #fff;
    color: #ff4a00;
}

.xk_nav .xk_jg {
    background: url(../img/xkp_03.png) no-repeat 70px 15px;
}


/* 免费 和付费 */

.xk_nav .mfkc {
    font: 14px/40px "Microsoft Yahei";
    padding-left: 20px;
    margin-left: 45px;
    height: 40px;
    color: #555;
    position: relative;
    float: left;
}

.xk_nav .mfkc:hover {
    color: #ff4a00
}

.xk_nav .mfkc:hover font {
    border: 1px solid #ff4a00;
}

.xk_nav .mfkc font {
    width: 14px;
    height: 14px;
    border: 1px solid #c0c0c0;
    position: absolute;
    top: 11px;
    left: 0;
}

.xk_nav .mfkc.active font {
    border: 1px solid #ff4a00;
    background: url(../img/yx_dj_03.jpg) no-repeat;
}


/* ----课程列表-------------- */

#excellent_class {
    margin-right: -20px;
}

#excellent_class li:hover img {
    transform: scale(1.2);
    -webkit-transform: scale(1.2);
    -moz-transform: scale(1.2);
    -ms-transform: scale(1.2);
    -o-transform: scale(1.2);
}

#excellent_class li {
    float: left;
    width: 285px;
    height: 230px;
    margin-top: 30px;
    position: relative;
    margin-right: 20px;
}

#excellent_class dl {
    width: 285px;
    height: 230px;
}

#excellent_class dt {
    width: 285px;
    height: 160px;
    overflow: hidden;
}

#excellent_class img {
    transition: 0.5s;
    -webkit-transition: 0.5s;
    -moz-transition: 0.5s;
    -ms-transition: 0.5s;
    -o-transition: 0.5s;
}

#excellent_class dd {
    height: 72px;
    color: #999;
}

#excellent_class dd em {
    color: #efefef;
}

#excellent_class dd a {
    font: 16px/46px "微软雅黑";
    color: #333;
    height: 46px;
    overflow: hidden;
    display: block;
    text-overflow: ellipsis;
    white-space: nowrap;
}

#excellent_class dd .green {
    color: #18b160;
}

#excellent_class dd .orange {
    color: #ff6600;
}